I've got an older, heavier catamaran, a 15' Venture made by MacGregor in 1972. It has no daggerboards, and just doesn't point very well into the wind...seems to take forever to tack back to home shore. I don't have the option of buying a newer, better boat right now. Is there any way to add a daggerboard, or some other modification to improve its pointing ability? Is there a technique that will help?